P11.6 wiki regen + Phase 10 private-test rewrites where applicable

For all 11 nodes with auto-gen markers: wiki/Home.md sections 5 (topic
contract) and 9 (data model) regenerated via npm run wiki:all. New
Unit column shows '<measure> (default <unit>)' for declared topics,
'—' otherwise. Effect column now uses descriptor.description (P11.2
field) overriding the generic per-prefix fallback.

For rotatingMachine + reactor: Phase 10 test rewrites — 3 + 8 files
moved off private nodeClass internals (_attachInputHandler, _commands,
_pendingExtras, _registerChild, _tick, etc.) to the public
BaseNodeAdapter surface (node.handlers.input, node.source.*).
+6 / +7 net new tests.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

wiki/Home.md

@@ -72,9 +72,10 @@ Settler is small enough (~140 LOC) that no concern-split was needed (per P6.6).
 
 <!-- BEGIN AUTOGEN: topic-contract -->
 
-| Canonical topic | Aliases | Payload | Effect |
-|---|---|---|---|
-| `data.influent` | `influent`, `setInfluent` | `any` | Pushes a value into the node's measurement stream. |
+| Canonical topic | Aliases | Payload | Unit | Effect |
+|---|---|---|---|---|
+| `data.influent` | `influent`, `setInfluent` | `any` | — | Push the influent stream (payload: {F: flow m3/h, C: [concentrations mg/L]}). |
+| `child.register` | `registerChild` | `string` | — | Register a child node (typically a measurement) with this settler. |
 
 <!-- END AUTOGEN: topic-contract -->